Zerank 1 Small
Compact 1.7B parameter model with novel ELO-based training on synthetic pairwise data for calibrated relevance scores. Half the cost of competing rerankers while maintaining strong ranking quality.
Model Information
- Provider
- ZeroEntropy
- License
- Open Source
- Price per 1M tokens
- $0.025
- Release Date
- 2025-07-10
- Model Name
- zerank-1-small
- Total Evaluations
- 3000
Performance Record
Wins1669 (55.6%)
Losses1216 (40.5%)
Ties115 (3.8%)
Wins
Losses
Ties
Performance Overview
ELO ratings by dataset
Zerank 1 Small's ELO performance varies across different benchmark datasets, showing its strengths in specific domains.
Zerank 1 Small - ELO by Dataset
Detailed Metrics
Dataset breakdown
Performance metrics across different benchmark datasets, including accuracy and latency percentiles.
PG
ELO 161958.8% WR294W-206L-0T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 287ms
- P50 (Median)
- 274ms
- P90
- 345ms
DBPedia
ELO 159360.0% WR300W-155L-45T
Accuracy Metrics
- nDCG@5
- 0.160
- nDCG@10
- 0.160
- Recall@5
- 0.004
- Recall@10
- 0.005
Latency Distribution
- Mean
- 226ms
- P50 (Median)
- 223ms
- P90
- 241ms
MSMARCO
ELO 152348.2% WR241W-224L-35T
Accuracy Metrics
- nDCG@5
- 0.498
- nDCG@10
- 0.552
- Recall@5
- 0.640
- Recall@10
- 0.800
Latency Distribution
- Mean
- 217ms
- P50 (Median)
- 214ms
- P90
- 227ms
business reports
ELO 152252.2% WR261W-230L-9T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 251ms
- P50 (Median)
- 242ms
- P90
- 298ms
arguana
ELO 151755.8% WR279W-213L-8T
Accuracy Metrics
- nDCG@5
- 0.279
- nDCG@10
- 0.375
- Recall@5
- 0.520
- Recall@10
- 0.820
Latency Distribution
- Mean
- 256ms
- P50 (Median)
- 254ms
- P90
- 280ms
FiQa
ELO 147258.8% WR294W-188L-18T
Accuracy Metrics
- nDCG@5
- 0.114
- nDCG@10
- 0.124
- Recall@5
- 0.098
- Recall@10
- 0.125
Latency Distribution
- Mean
- 248ms
- P50 (Median)
- 244ms
- P90
- 266ms
Compare Models
See how it stacks up
Compare Zerank 1 Small with other top rerankers to understand the differences in performance, accuracy, and latency.